Feedback from the wall

Pilling, Emma; Höfte, Monica

doi:10.1016/j.pbi.2003.09.004

Cited by 93 publications

(69 citation statements)

References 47 publications

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“…Although contrasting correlations between XTH and cell expansion have been reported, the overall available evidence argues for a functional role for XTH in primary cell wall enlargement (Rose et al, 2002). Besides its structural function, xyloglucans are also a source of growth-regulating oligosaccharides, which might play role in signaling (Perrin et al, 1999;Pilling and Hofte, 2003).…”

Section: Xyloglucan Glucosyltransferasesmentioning

confidence: 99%

The Potassium-Dependent Transcriptome of Arabidopsis Reveals a Prominent Role of Jasmonic Acid in Nutrient Signaling

2004

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Full genome microarrays were used to assess transcriptional responses of Arabidopsis seedlings to changing external supply of the essential macronutrient potassium (K+). Rank product statistics and iterative group analysis were employed to identify differentially regulated genes and statistically significant coregulated sets of functionally related genes. The most prominent response was found for genes linked to the phytohormone jasmonic acid (JA). Transcript levels for the JA biosynthetic enzymes lipoxygenase, allene oxide synthase, and allene oxide cyclase were strongly increased during K+ starvation and quickly decreased after K+ resupply. A large number of well-known JA responsive genes showed the same expression profile, including genes involved in storage of amino acids (VSP), glucosinolate production (CYP79), polyamine biosynthesis (ADC2), and defense (PDF1.2). Our findings highlight a novel role of JA in nutrient signaling and stress management through a variety of physiological processes such as nutrient storage, recycling, and reallocation. Other highly significant K+-responsive genes discovered in our study encoded cell wall proteins (e.g. extensins and arabinogalactans) and ion transporters (e.g. the high-affinity K+ transporter HAK5 and the nitrate transporter NRT2.1) as well as proteins with a putative role in Ca2+ signaling (e.g. calmodulins). On the basis of our results, we propose candidate genes involved in K+ perception and signaling as well as a network of molecular processes underlying plant adaptation to K+ deficiency.

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Section: Xyloglucan Glucosyltransferasesmentioning

confidence: 99%

The Potassium-Dependent Transcriptome of Arabidopsis Reveals a Prominent Role of Jasmonic Acid in Nutrient Signaling

2004

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“…Plant cell walls display a unique combination of strength and plasticity with an astonishing capability to sense and respond to external stimuli (Manfield et al 2004;Pilling and Hofte 2003;Somerville et al 2004). In addition to their role in plant development and survival, plant cell walls are essential for important commercial industries such as textile, paper and pulp manufacturing, malting, and brewing.…”

Section: Introductionmentioning

confidence: 99%

Transcriptional dynamics during cell wall removal and regeneration reveals key genes involved in cell wall development in rice

et al. 2011

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TitleTranscriptional dynamics during cell wall removal and regeneration reveals key genes involved in cell wall development in rice. Abstract Efficient and cost-effective conversion of plant biomass to usable forms of energy requires a thorough understanding of cell wall biosynthesis, modification and degradation. To elucidate these processes, we assessed the expression dynamics during enzymatic removal and regeneration of rice cell walls in suspension cells over time. In total, 928 genes exhibited significant up-regulation during cell wall removal, whereas, 79 genes were up-regulated during cell wall regeneration. Both gene sets are enriched for kinases, transcription factors and genes predicted to be involved in cell wall-related functions. Integration of the gene expression datasets with a catalog of known and/or predicted biochemical pathways from rice, revealed metabolic and hormonal pathways involved in cell wall degradation and regeneration. Rice lines carrying Tos17 mutations in genes up-regulated during cell wall removal exhibit dwarf phenotypes. Many of the genes up-regulated during cell wall development are also up-regulated in response to infection and environmental perturbations indicating a coordinated response to diverse types of stress.

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“…Cell surface glycoconjugates -polysaccharides, glycoproteins, and glycolipidsplay many fundamental roles in the growth and development of uni-and multicellular eukaryotes, including yeast, plants, rats, and humans (1)(2)(3). In addition, cell surface recognition of hosts by their pathogens such as Candida spp and Leishmania spp also requires these molecules (4).…”

Section: Introductionmentioning

confidence: 99%

Nucleotide-sugar transporters: structure, function and roles in vivo

Handford

Rodríguez-Furlán

Orellana

2006

Braz J Med Biol Res

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The glycosylation of glycoconjugates and the biosynthesis of polysaccharides depend on nucleotide-sugars which are the substrates for glycosyltransferases. A large proportion of these enzymes are located within the lumen of the Golgi apparatus as well as the endoplasmic reticulum, while many of the nucleotide-sugars are synthesized in the cytosol. Thus, nucleotide-sugars are translocated from the cytosol to the lumen of the Golgi apparatus and endoplasmic reticulum by multiple spanning domain proteins known as nucleotide-sugar transporters (NSTs). These proteins were first identified biochemically and some of them were cloned by complementation of mutants. Genome and expressed sequence tag sequencing allowed the identification of a number of sequences that may encode for NSTs in different organisms. The functional characterization of some of these genes has shown that some of them can be highly specific in their substrate specificity while others can utilize up to three different nucleotidesugars containing the same nucleotide. Mutations in genes encoding for NSTs can lead to changes in development in Drosophila melanogaster or Caenorhabditis elegans, as well as alterations in the infectivity of Leishmania donovani. In humans, the mutation of a GDP-fucose transporter is responsible for an impaired immune response as well as retarded growth. These results suggest that, even though there appear to be a fair number of genes encoding for NSTs, they are not functionally redundant and seem to play specific roles in glycosylation. Correspondence

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Feedback from the wall

Cited by 93 publications

References 47 publications

The Potassium-Dependent Transcriptome of Arabidopsis Reveals a Prominent Role of Jasmonic Acid in Nutrient Signaling

The Potassium-Dependent Transcriptome of Arabidopsis Reveals a Prominent Role of Jasmonic Acid in Nutrient Signaling

Transcriptional dynamics during cell wall removal and regeneration reveals key genes involved in cell wall development in rice

Nucleotide-sugar transporters: structure, function and roles in vivo

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